Dental superstructure



FIG. 1 is a perspective view of a first embodiment of a dental superstructure showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a front elevation view thereof;

FIG. 6 is a left-side elevation view thereof; and,

FIG. 7 is a right-side elevation view thereof.

The broken lines immediately adjacent to the shaded area represent unclaimed boundaries of the design and form no part of the claimed design. 

CLAIM The ornamental design for a dental superstructure, as shown and described. 